On this day: July 1

Published On: Jun 28 2013 03:06:05 PM CDT   Updated On: Jul 01 2014 01:00:00 AM CDT

The Battle of Gettysburg begins, America's first zoo opens, the first Tour de France starts, the Sony Walkman hits the market, the PG-13 movie rating is introduced, and the Deepwater Horizon oil spill breaks an unfortunate record, all on this day.

OTD July 1 - Canadian Constitution
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Public domain

1867: The British North America Act of 1867 takes effect as the Constitution of Canada, creating the Canadian Confederation and the federal dominion of Canada. The act's anniversary is celebrated annually in Canada as Canada Day.

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